78618578284 has 24 divisors (see below), whose sum is σ = 148144686480. Its totient is φ = 36369908736.

The previous prime is 78618578281. The next prime is 78618578329. The reversal of 78618578284 is 48287581687.

It is not an unprimeable number, because it can be changed into a prime (78618578281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9793917 + ... + 9801940.

It is an arithmetic number, because the mean of its divisors is an integer number (6172695270).

Almost surely, 2^78618578284 is an apocalyptic number.

It is an amenable number.

78618578284 is a deficient number, since it is larger than the sum of its proper divisors (69526108196).

78618578284 is a wasteful number, since it uses less digits than its factorization.

78618578284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19595937 (or 19595935 counting only the distinct ones).

The product of its digits is 48168960, while the sum is 64.

The spelling of 78618578284 in words is "seventy-eight billion, six hundred eighteen million, five hundred seventy-eight thousand, two hundred eighty-four".